Seat for a snowmobile



FIG. 1 is a right-rear perspective view of a seat for a snowmobile showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a front elevational view thereof.

The broken line showing the interior of the seat and structure extending below the seat is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a seat for a snowmobile, as shown and described. 